1. volume server auto detect clustered master nodes

2. remove operation package dependency on storage

go/util/http_util.go

@@ -0,0 +1,38 @@
+package util
+
+import (
+	"code.google.com/p/weed-fs/go/glog"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+)
+
+func Post(url string, values url.Values) ([]byte, error) {
+	r, err := http.PostForm(url, values)
+	if err != nil {
+		glog.V(0).Infoln("post to", url, err)
+		return nil, err
+	}
+	defer r.Body.Close()
+	b, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		glog.V(0).Infoln("read post result from", url, err)
+		return nil, err
+	}
+	return b, nil
+}
+
+func Get(url string) ([]byte, error) {
+	r, err := http.Get(url)
+	if err != nil {
+		glog.V(0).Infoln("getting ", url, err)
+		return nil, err
+	}
+	defer r.Body.Close()
+	b, err := ioutil.ReadAll(r.Body)
+	if err != nil {
+		glog.V(0).Infoln("read get result from", url, err)
+		return nil, err
+	}
+	return b, nil
+}